Allow Flatcar Linux os_image on AWS, rename os_channel
* Replace os_channel variable with os_image to align naming across clouds. Users who set this option to stable, beta, or alpha should now set os_image to coreos-stable, coreos-beta, or coreos-alpha. * Default os_image to coreos-stable. This continues to use the most recent image from the stable channel as always. * Allow Container Linux derivative Flatcar Linux by setting os_image to `flatcar-stable`, `flatcar-beta`, `flatcar-alpha`
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Dalton Hubble
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@ -9,10 +9,12 @@ Notable changes between versions.
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#### AWS
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* Allow "preemptible" workers via spot instances ([#202](https://github.com/poseidon/typhoon/pull/202))
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* Add `worker_price` to allow worker spot instances. Defaults to empty string for the worker autoscaling group to use regular on-demand instances.
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* Allow preemptible workers via spot instances ([#202](https://github.com/poseidon/typhoon/pull/202))
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* Add `worker_price` to allow worker spot instances. Default to empty string for the worker autoscaling group to use regular on-demand instances.
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* Add `spot_price` to internal `workers` module for spot [worker pools](https://typhoon.psdn.io/advanced/worker-pools/)
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* Note: Unlike GCP `preemptible` workers, spot instances require you to pick a bid price.
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* Allow Container Linux derivative [Flatcar Linux](https://docs.flatcar-linux.org/) by setting `os_image` to `flatcar-stable`, `flatcar-beta`, `flatcar-alpha`.
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* Replace `os_channel` variable with `os_image` to align naming across clouds
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* Please change values `stable`, `beta`, or `alpha` to `coreos-stable` (default), `coreos-beta`, `coreos-alpha` (action required!)
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#### Addons
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@ -1,3 +1,12 @@
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locals {
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# Pick a CoreOS Container Linux derivative
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# coreos-stable -> Container Linux AMI
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# flatcar-stable -> Flatcar Linux AMI
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ami_id = "${local.flavor == "flatcar" ? data.aws_ami.flatcar.image_id : data.aws_ami.coreos.image_id}"
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flavor = "${element(split("-", var.os_image), 0)}"
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channel = "${element(split("-", var.os_image), 1)}"
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}
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data "aws_ami" "coreos" {
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most_recent = true
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owners = ["595879546273"]
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@ -14,6 +23,27 @@ data "aws_ami" "coreos" {
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filter {
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name = "name"
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values = ["CoreOS-${var.os_channel}-*"]
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values = ["CoreOS-${local.channel}-*"]
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}
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}
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data "aws_ami" "flatcar" {
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most_recent = true
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owners = ["075585003325"]
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filter {
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name = "architecture"
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values = ["x86_64"]
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}
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filter {
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name = "virtualization-type"
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values = ["hvm"]
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}
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filter {
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name = "name"
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values = ["Flatcar-${local.channel}-*"]
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}
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}
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@ -23,7 +23,7 @@ resource "aws_instance" "controllers" {
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instance_type = "${var.controller_type}"
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ami = "${data.aws_ami.coreos.image_id}"
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ami = "${local.ami_id}"
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user_data = "${element(data.ct_config.controller_ign.*.rendered, count.index)}"
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# storage
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@ -41,10 +41,10 @@ variable "worker_type" {
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description = "EC2 instance type for workers"
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}
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variable "os_channel" {
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variable "os_image" {
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type = "string"
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default = "stable"
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description = "Container Linux AMI channel (stable, beta, alpha)"
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default = "coreos-stable"
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description = "AMI channel for a Container Linux derivative (coreos-stable, coreos-beta, coreos-alpha, flatcar-stable, flatcar-beta, flatcar-alpha)"
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}
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variable "disk_size" {
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@ -8,7 +8,7 @@ module "workers" {
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security_groups = ["${aws_security_group.worker.id}"]
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count = "${var.worker_count}"
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instance_type = "${var.worker_type}"
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os_channel = "${var.os_channel}"
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os_image = "${var.os_image}"
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disk_size = "${var.disk_size}"
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spot_price = "${var.worker_price}"
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@ -1,3 +1,12 @@
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locals {
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# Pick a CoreOS Container Linux derivative
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# coreos-stable -> Container Linux AMI
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# flatcar-stable -> Flatcar Linux AMI
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ami_id = "${local.flavor == "flatcar" ? data.aws_ami.flatcar.image_id : data.aws_ami.coreos.image_id}"
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flavor = "${element(split("-", var.os_image), 0)}"
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channel = "${element(split("-", var.os_image), 1)}"
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}
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data "aws_ami" "coreos" {
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most_recent = true
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owners = ["595879546273"]
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@ -14,6 +23,27 @@ data "aws_ami" "coreos" {
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filter {
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name = "name"
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values = ["CoreOS-${var.os_channel}-*"]
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values = ["CoreOS-${local.channel}-*"]
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}
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}
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data "aws_ami" "flatcar" {
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most_recent = true
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owners = ["075585003325"]
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filter {
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name = "architecture"
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values = ["x86_64"]
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}
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filter {
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name = "virtualization-type"
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values = ["hvm"]
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}
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filter {
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name = "name"
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values = ["Flatcar-${local.channel}-*"]
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}
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}
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@ -34,10 +34,10 @@ variable "instance_type" {
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description = "EC2 instance type"
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}
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variable "os_channel" {
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variable "os_image" {
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type = "string"
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default = "stable"
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description = "Container Linux AMI channel (stable, beta, alpha)"
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default = "coreos-stable"
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description = "AMI channel for a Container Linux derivative (coreos-stable, coreos-beta, coreos-alpha, flatcar-stable, flatcar-beta, flatcar-alpha)"
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}
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variable "disk_size" {
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@ -41,7 +41,7 @@ resource "aws_autoscaling_group" "workers" {
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# Worker template
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resource "aws_launch_configuration" "worker" {
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image_id = "${data.aws_ami.coreos.image_id}"
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image_id = "${local.ami_id}"
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instance_type = "${var.instance_type}"
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spot_price = "${var.spot_price}"
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@ -33,7 +33,7 @@ module "tempest-worker-pool" {
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count = 2
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instance_type = "m5.large"
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os_channel = "beta"
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os_image = "coreos-beta"
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}
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```
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@ -66,7 +66,7 @@ The AWS internal `workers` module supports a number of [variables](https://githu
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|:-----|:------------|:--------|:--------|
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| count | Number of instances | 1 | 3 |
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| instance_type | EC2 instance type | "t2.small" | "t2.medium" |
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| os_channel | Container Linux AMI channel | stable| "beta", "alpha" |
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| os_image | AMI channel for a Container Linux derivative | coreos-stable | coreos-stable, coreos-beta, coreos-alpha, flatcar-stable, flatcar-beta, flatcar-alpha |
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| disk_size | Size of the disk in GB | 40 | 100 |
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| spot_price | Spot price in USD for workers. Leave as default empty string for regular on-demand instances | "" | "0.10" |
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| service_cidr | Must match `service_cidr` of cluster | "10.3.0.0/16" | "10.3.0.0/24" |
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@ -241,7 +241,7 @@ Reference the DNS zone id with `"${aws_route53_zone.zone-for-clusters.zone_id}"`
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| worker_count | Number of workers | 1 | 3 |
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| controller_type | EC2 instance type for controllers | "t2.small" | See below |
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| worker_type | EC2 instance type for workers | "t2.small" | See below |
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| os_channel | Container Linux AMI channel | stable | stable, beta, alpha |
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| os_image | AMI channel for a Container Linux derivative | coreos-stable | coreos-stable, coreos-beta, coreos-alpha, flatcar-stable, flatcar-beta, flatcar-alpha |
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| disk_size | Size of the EBS volume in GB | "40" | "100" |
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| disk_type | Type of the EBS volume | "gp2" | standard, gp2, io1 |
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| worker_price | Spot price in USD for workers. Leave as default empty string for regular on-demand instances | "" | "0.10" |
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